If you follow the two clues (the email adress ---> google it and then check the document it leads to,  and if you check their backlink profile) you can find all sorts of things. If you are serious and you have a lot of free time (which I don'T) so I'm out I've got a company to run in the morning but it was cool. Reminded me of the Cicada 3301 hunt a little, of course that shit is 1000x harder.